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Article
Specular and Off-Specular X-Ray Scattering as Quantitative Structural Probes of Multilayers. Application to MN/IR(111) Superlattices
Diffuse scattering of X rays is a particularly useful tool for studying interface and surface defects in single layer films. We have extended this technique to the study of multilayers. The samples are Mn/Ir(1...
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Article
Exchange bias like effect induced by domain walls in FeGd/FeSn bilayers
A study of exchange bias phenomenon in ferrimagnetic /ferromagnetic FeGd/ FeSn bilayers is presented. The amorphous FeSn and FeGd alloys have been grown by co-evaporation. Specific growth conditions allow to i...
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Article
Evidence of bcc Mn epitaxial growth in Mn/MxV1–x(001) (M = Fe, Nb) superlattices
This study is dedicated to the growth of bcc Mn by molecular beam epitaxy, in order to look at the magnetic properties of bcc Mn near room temperature. For this purpose, Mn is deposited on bcc MxV1-x(001) alloy l...
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Article
Unusual Magnetic Behaviour of BCT Fe Thin Films Evidenced by 57Fe Mössbauer Spectrometry
Unusual magnetic behaviours occur in thin Fe films grown on Ir(100) by Molecular Beam Epitaxy. Four different magnetic sites are actually observed in these layers by Conversion Electron Mössbauer Spectrometry....
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Article
Interrelation Between Structure and Magnetism of Ultra-Thin Mn Films Epitaxially Grown on (001) BCC Fe
In this paper, the interrelation between structural and magnetic properties of ultra-thin Mn films epitaxially grown on (001) bcc Fe is studied. The Mn growth and in-plane structure were controlled by electron...
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Article
Magnetic properties of 57Fe/Ir(100) superlattices
The synthesis of a new BCT Fe phase was performed in Fe/Ir(100) superlattices grown by MBE. Magnetic properties of 57Fe/Ir(100) superlattices with 4 ml Fe and variable Ir thickness (2–30 Å) are investigated by 57
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Article
Magnetic Properties of FEXMN1-X/IR(100) Superlattices.
We have produced pseudomorphic FexMn1-x/Ir(100) superlattices having different stoichiometry (0.8 ≥ x ≥ 0.3). The alloy crystalline structure is body centered tetragonal with a c/a ratio between 1.18 and 1.26. Ir...
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Article
Structural properties and thermal stability of Fe/Al2O3 multilayers
Iron/alumina multilayers have been deposited on sapphire wafers using RF magnetron sputtering. To study the interdiffusion, the multilayers were annealed in a tubular furnace under a 10−7 mbar vacuum, and the sam...
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Article
Magnetic and Structural Properties of Iron Nitride thin Films Obtained by Argon-Nitrogen Reactive Radio-Frequency Sputtering
Fe-N thin films have attracted considerable attention because they are potential candidates for magnetic recording with their large saturation magnetization and their good corrosion resistance1. It has even been ...
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Article
Effect of Ion Irradiation on the Artificial Structure and the Interlayer Coupling of Copper-Cobalt Multilayers
Structural defects like local ferromagnetic short-circuits are responsible for large reductions of the intrinsic interlayer coupling in the case of antiferromagnetically (AF) coupled multilayers (ML). We have ...
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Article
Modification of Magnetic Coupling in Antiferromagnetically Coupled Bilayers Due to the Existence of Ferromagnetic Pin Holes.
We have calculated numerical simulations and analytical solutions of the influence of a pin hole on the magnetization curves of multilayer systems. The magnetization curves we obtained can be described by a bi...
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Article
New BCT Iron Phase In (100) Felr Superlattices
In this paper, the synthesis of a new structure of iron in (100) Felr superlattices grown by Molecular Beam Epitaxy is reported. Two-dimensional growth up to 4 planes at 400K occurs, as shown by RHEED oscillat...
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Article
Evidence for Spin Polarization of Metallic Copper in Co/Cu and Fe/Cu Multilayers
Magnetic circular x-ray dichroism measurements on Co/Cu and Fe/Cu multilayers at the K edge of copper show that the 4p-states of copper are significantly spin-polarized by the adjacent magnetic layers. In relatio...
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Article
Magnetic Properties of Fe/Ru and Fe/Ir Superlattices with Short Periodicity
We present new results on the magnetic properties of constrained, iron base, good quality, single-crystalline superlattices, Fe/Ru and Fe/Ir. It is shown that in the first case there are two magnetically dead ...
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Article
Atomic Structure and Growth Mode of Fe/Ir Superlattices with Short Periodicity
FeIr superlattices with short periodicities are realised by Molecular Beam Epitaxy. Ir on (1120) sapphire and Fe on (111) Ir growths are studied in situ by electron diffraction. Like FeRu superlattices, a new ...
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Chapter
Magnetic Properties of Hexagonal Fe/Ru Superlattices with Short Periodicity
The recent introduction of molecular beam epitaxy techniques in metal physics has introduced the ability to prepare new crystalline structures of elemental metals by epitaxy (pseudomorphic structures).
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Article
Magnetism and structure of hexagonal Fe in Fe/Ru superlattices
Mössbauer spectroscopy is applied to study the magnetism and the local structure of Fe/Ru superlattices. Fe Layers show hcp structure, isomorphous with Ru. A well-defined symmetry is observed at Fe sites, withV z...
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Article
Growth, Characterization and Magnetic Properties Of HCP Fe/Ru Superlattices Synthetized by MBE
Hexagonal-close-packed Fex/Rux superlattices with the modulation along the (0001) axis, contaln fully hcp Fe layers. The interatomic Fe-Fe distances are enlarged by about 10% as compared to fcc Fe. Ferromagnetic ...
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Chapter
Magnetic Anisotropy in Modulated Nd-Fe Multilayers
Rare-Earth-Transition Metal (RE-TM) amorphous thin films have recently attracted considerable attention [1,2,3] not only because of basic physical interest but also as a technologically useful material for per...
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Article
Study of short range order in CoxSn1-x amorphous alloys by NMR and mössbauer spectroscopy
Mössbauer parameters have been determined on119Sn in alloys with large tin concentration and in applied external field. The electric field gradient around tin is essentially positive and has a narrow distribution...
